Train-stopping apparatus.



V. E. BOCK.

TR'MN STOPPING APPARATUS.

memos mso MAR. 12. 1915.

Patented Dec. 7, 19l5.

amewto z ZJGZZICZ @ae VICTOR E. BOOK, OF PHARR, TEXAS.

TRAIN-STOPPIN G APPARATUS.

Specification of Letters Patent.

Patented Dec. '7, 1915.

Application filed March 12, 1915. Serial No. 14,028.

To all whom it may concern:

Be it known that I, VICTOR E. Boon, a citizen of the United States of America,residing at Pharr, in the county of Hidalgo and State of Texas, have invented new and useful Improvements in Train-Stopping Apparatus, of which the following is a specification.

This invention relates to improvements in train stopping apparatus and has particular application to electrically operated apparatus of thi character.

In ,carrying out the present invent1on, 1t is my purpose to provide an automatic tram stop wherein by means of electric motors the propelling power of a motor car W'lll be cut off and the air brakes applied in the event of the engineer or motorman neglecting to read the danger signal and running into the danger zone.

It is also my purpose to provide apparatus of the class described wherein the motor circuits will be held closed after the initial closing thereof so that the motors may electrically operate the respective valves and wherein the motor will be deenergized immediately succeeding the cutting off of the propelling power of the car.

VV'ith the above and other objects in view, the invention consists in the construction,

combination and arrangement of parts here inafter set forth in and falling within the scope of the claim.

In the accompanying drawings; Figure 1 is a diagrammatic view of train stopping apparatus constructed in accordance with the present invention. Fig. 2 is a sectional view on theline 44 of Fig. 1.

In the present instance, I have shown and described my invention as installed in a steam locomotive and in this connection I wish it to be understood that the device is equally applicable to other power driven motor cars.

Referring now to the drawings in detail, 1 designates the steam main of a steam driyen locomotive and 2 the brake pipe of the train. Located in the steam,main 1 is a cutoff valve 3 having the stem thereof disposed in a horizontal plane and connected with the stem of the valve 3 is a toothed sector 4- meshing with a pinion 5 fixed to the armature shaft of an electric motor 6. In. the present instance, the motor 6 is mounted upon a base 7 which is supported upon the pipe 1 by means of brackets 8 surrounding the pipe 1 at opposite sides of the valve 3 and uprising therefrom. Located in the brake pipe 2 is a releasing valve 9 havmg the stem thereof disposed in a horizontal plane and secured to the stem of the valve 9 is a toothed sector 10 meshing with a pinion 11 keyed upon the armature shaft of an electric motor 12. Suitably fastened to the pipe 1 in the path of movement of the sector 4 to valve closing position is a circuit breaker 13 of some suitable construction,

while located adjacent to the circuit breaker and projecting outwardly from the pipe 1 is a stop lug 14. Secured to the brake pipe 2 and" disposed in the path of movement of the sector 10 to valve opening position is a stop lug 15.

Depending from-the locomotive and suit-.

ably securedthereto is a circuit closer 16 comprising a horizontal limb 17 and a limb 18 having one end pivoted to one extremity of the horizontal limb 17 as at 19. Interposed between the limbs 17 and 18 adjacent to the other ends thereof is an expansion spring 20 acting normally to hold the limbs 17 and 18 spaced apart, while formed on the end of the limb 17 remote from the pivot 19 and depending therefrom is a lug 21 carrying a spring clip 22 adapted to engage a hook 23 carried by the adjacent end of the limb 18 when the limb 18 is swung upwardly to circuit closing position against the action of the spring 20. The inner faces of the limbs 17 and 18 are equipped with contact springs 24 respectively and these springs are insulated from the respective limbs 17 and 18 and are normally out of engagement with each other and adapted to be brought into engagement when the limb 18 swings upwardly toward the limb 17 against the action of the spring 20. The contact springs 24, circuit breaker 13 and electric motor 6 are connected in series in an electric circuit 25 including a suitable source of electrical energy as a battery 26,'while the motor 12 is connected in parallel with the circuit 25 by means of conductors 27.

In practice, when the limb 18 swings upwardly toward the limb 17 the contacts 24 engage each other and the hook 23 engages the spring clip 22, thereby holding the limbs 17 and 18in circuit closing position against the action of the spring 20. As the contacts 24 engage each other the circuit 25 is closed the latter to break the circuit 25 thereby deenergizing the motors 6 and 12. Immediately succeeding the operation of the circuit breaker the sector 4 engages the stop lug 14, thereby preventing further movement of the sector under the action of the revolving armature, the armature tending to revolve under its ownmomentum.

Simultaneously with the operatibn of the motor 6, the motor 12 operates and opens the valve 9 to bleed the brake pipe, the motor 12 being denergized as long as the valve 9 is open and the lug ,15 acting to check the movement of the sector 10 under the action of the armature of the motor 12.

Located along the trackway and suitably spaced apart and preferably controlled from the respective road signals are track instru:

ments- 28 connected to suitable means 22 with the signal.

I claim:

The combination with a controlling element of a motor car, of a toothed sector secured to said element, an electric motor, a pinion on the armature shaft of said motor meshing with said sector, an electric circuit including said motor, a circuit breaker connected in said circuit and disposed in the path of movement of said sector, a stop lug disposed adjacent to said circuit breaker in the path of movement of said sector to arrest the movement of the sector under the action of the revolving armature of the motor succeeding the operation of the circuit breaker, and a circuit closer for closing said circuit.

In testimony whereof I affix my signature I in presence of two witnesses.

VICTOR E. BOCK.

Witnesses:

J. W. LosH, CLAYBONE BREAUX.

(ioples of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

